Monique Knowlton (May 24, 1937 â October 8, 2024) was a German-American model and gallerist. In 1981, her Upper East Side gallery was described by The New York Times as a âÂÂhospitable haven, in which to be outrageous counts as a plus.â Knowlton died on October 8, 2024, at the age of 87.